Also found in: Dictionary, Thesaurus, Medical, Idioms, Wikipedia.
Projection of a tread of a stair beyond the riser below it.
A transverse, horizontal motion of a locomotive that exerts a lateral force on the track.
The rounded edge of a horizontal surface that projects beyond the vertical surface below, such as the projection of a tread beyond the riser.
The prominent, usually rounded, horizontal edge which extends beyond an upright face below; as the projection of a tread beyond a riser.